<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>405 Method Not Allowed</title>
    <style>
        body {
            margin: 0;
            font-family: Arial, sans-serif;
            background-color: #202123; /* Dark mode background */
            color: #FFFFFF; /* Text color */
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
        }

        .container {
            text-align: center;
            background-color: #33373E; /* Slightly lighter background */
            padding: 40px 50px;
            border-radius: 15px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
            width: 100%;
            max-width: 400px;
        }

        h1 {
            margin-bottom: 20px;
            font-size: 24px;
        }

        p {
            font-size: 16px;
            margin-bottom: 20px;
        }

        a {
            color: #10A37F;
            text-decoration: none;
            transition: color 0.3s;
        }

        a:hover {
            color: #0E8F6E;
        }

        .footer {
            margin-top: 20px;
            font-size: 14px;
            color: #B0B3B8; /* Muted text */
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>405 Method Not Allowed</h1>
        <p>The method you used is not allowed for this resource.</p>
        <p><a href="/">Go back to the home page</a></p>
        <div class="footer">
            <p>Need help? <a href="/contact">Contact us</a></p>
        </div>
    </div>
</body>
</html>